Pure Data (hamar) is a project based on the resistance encountered by Enlightenment thought in the context of Gipuzkoa, summed up in the case of the introduction of the decimal metric system as an abstract and universal value. This initial exhibition serves to contrast different ways of ordering reality: mathematical, rhythmic, melodious, historical or divine. As a convention, every measurement can also be understood as an expression of social relations and therefore as a source of knowledge of the struggles that are resolved between different interests of government and living together. The aim of the project Pura data (hamar) is to work through the formal appearance acquired by these phenomena and their assimilation as economic signs on the basis of their uses. As an instrument of intervention in the world, it is possible to trace the adoption of the administrative-economic paradigm facing the notion of the political back to the very origins of Christian thought – as the Italian philosopher Giorgio Agamben tells us. A system of management that excludes any speculative operations, and whose reminiscences reach the Celestial Hierarchy of the father of European mysticism, Pseudo-Dionysius the Areopagite, who was at the same time the founder of the economy and aesthetics. If the changes brought by the modern age are understood as a continuity – an efficient purging – of the administrative model described, then we would be talking about a new and old world governed (spiritually) by numbers, statistics and percentages.